Mining machine



M. P. HOLMES Nov. 5, 1929.

MINING MACHINE Original Filed Dec. 11, 1918 8 Sheets-Sheet r w w v .3 7 M lylaimea.

M. P. HOLMES MINING MACHINE Nov. 5, 1929.

Original Filed Dec. 11, 1918 8 Sheets-Sheet 2 QTQ aw Invervfar: 5012110211066.

M. P. HOLMES MINING MACHINE Nov. 5, 1929.

Original Filed Dec. 11, 1918 8 Sheets-$heet Nov. 5, 1929. p, HOLMES 1,734,946

MINING MACHINE Original Filed Dec. 11. 191 8 Sheets-Sheet 4 lvzveniar: YZZZOI" "Z61? 110 171266,

M. P. HOLMES MINI'NG MACHINE Nov. 5, 1929.

Original Filed Dec. 11, 1918 8 Sheets-Sheet 5 lneu'tor;

iizarrzlslllia imas y M. P. HOLMES Nov. 5, R929.

MINING MACHINE Original Filed Dec. 11, 1918 8 Sheets-Sheet 6 Inveniwv any.

M. P. HOLMES MINING MACHINE Nov. 5, 1929.

Original Filed Dec. 11, 1918 8 Sheets-Sheet 7 tlq /a HaZvzas.

any.

Nov. 5, 1929.

M. P. HOLMES MINING MACHINE Original Filed Dec. 11, 1918 8 Sheejcs-Sheet 8 n a Z Patented Nov. 5, 1929 UNITED STATES PATIENT OFFICE MORRIS P. HOLMEB, 0F CLABSEMONT, NEW HAMPSHIRE, ASSIGNOB '10 SULLIVAN MACHDIEBY COMPANY, A CORPORATION OF MASSACHUSETTS MINING MACHINE Application filed December 11, 1918, Serial No. 286,812. Renewed Kay 28, 1925.

This invention relates to mining machines, and especially to coal mining machines of the type comprising a flat cutter bar provided with a continuously running cutter chain, although not necessarily limited to machines of this particular type.

The invention has for its eneral object to provide an improved machine of practical design adapted to cut a kerf in'a mine face in substantially any desired plane within the range of operation of the machine, said machine comprising improved mechanism whereby the same may be conveniently adjusted, o erated, and propelled from place to place a ut the mine.

More specifically, the invention contemplates certain improvements in machines of the character disclosed and claimed in my prior application for Letters Patent filed Nov. 1,1918, Serial No. 260,708, whereby the range of adjustability of the machine is increased, and whereby its control, adjustment, and operation are facilitated.

The foregoing and other objects of the mvention, to ether with means whereby the same may e carried into effect, will best be understood from the following descrip tion of one form or embodiment thereof shown for purposes of illustration in the ac companying drawings.

In said drawings,

Fig. 1 is a side elevation, and Fig. 2 a plan view, of the complete machine, the outer end of the cutter bar being broken away.

Fig. 3 is an enlarged longitudinal section, taken substantially on the line 33, F 1g. 2, of the adjustable cutter bar head.

1 Fig. 4 is a vertical section taken substantiall y onthe line 44.-, of Figs. 3 and 5.

Fig. 5 is a horizontal section on the line 5-5, Fig. 3.

Fig. IQ is a section on the line l0-10,

Figs. 11 and 11 are vertical sections taken substantially on the lines 11-11 and 11'-11 res ctively, Fig. 7.

ig. 12 is a diagrammatic plan view illustrating the operation of the machine in cutting a horizontal kerf in a mine face in. the

operation of driving an entry.

Fig. 13 is a diagrammatic view, in side elevation, illustrating the operation of the machine in top cutting.

Fig. 14 is a diagrammatic plan view-illustrating the operation of the machine in shearing or inserting a vertical kerf in a mine face.

' Fi'g. 15 is a diagrammatic view illustratmg some of the possible adjustments of the cutter bar.

Fig. 16 is a diagrammatic view, in side elevat1on illustrating the operation of the machine 1n undercutting at an inclination.

Flg. 17 is a diagrammatic plan view illustrating the use of the machine as a mounted longwall machine.

Fig. 18 is a diagrammatic view, in end elevation, .illustrating the machine operating as a mounted longwall machine in cutting an inclined kerf in a face at one side of the trackway.

Referring first to Figs. 1 and 2, the apparatus as a whole comprises a truck consisting of a truck body 20 mounted on wheels 21 secured to front and rear axles 23 and 24, respectively, and adapted to run upon a suitable trackway 22. Upon said truck is mounted the mining mechanism including a motor casing 25 and a forwardly extending cutter bar 26 provided with the usual cutter chain 27, saidcutter barbeing supported on said truck by means hereinafter more fully described.

In order to permit adjustment of the cutter bar 26 wit res ect to the trackway 22 about a transverse orizontal axis, the rear axle 24 as herein shown is journaled in boxes 28 (see Figs. 3 and 15) mounted in guideways 29 in dependingbrackets 30 carried by. the truck body 20, whereby said axle and truck body are relatively vertically movable, said truck bod during such vertical movement turning .a cut the axis of the front axle 23. For the purpose of relatively adjusting the truck body and axle 24 and of retain ing the parts in adjusted position, said axle, as herein shown, is provided witha collar 31 to which is secured, as by a pin 32, a rod 33 havin a threaded upper and cooperating with a t readed sleeve 34 provided with a hand wheel 35. The sleeve 34'is rotatably mounted in a hanger or bracket 35 projecting downwardly from a casing 37 bolted to the truck body 20 and enclosin certain transmission mechanism hereina ter described.

' Within the casing is'the usual electric or other motor 19, governed by a suitable controller 38 (Fig. 2), preferably secured to the casing 37, said motor being supplied with current through a cable wound upon a reel 39 journaled in the truck body 20, said reel being electrically connected with the motor by the usual conductors (not shown) and, as is usual in machines of this character, being rotated, by means hereinafter referred to, to wind up or pay out the cable as the truck is pro elled in one direction or the other along t e track 22.

The motor casing 25 is mounted in the truck body 20 for angular adjustment about a substantially-horizontal longitudinal axis, and to this end the cylindrical forward end thereof is rotatably supported in an annular frame member 40 (see particularly Fig. 6) at the forward end of said truck body, while the rear end of said casing'is reduced in diameter and is formed with a cylindrical projection 41 (see Fig. 9), which is journaled in a sleeve 42 (see also Fig. 2) forming a part of a transverse truck bed frame member 43.

The motor shaft 44 ig. 9) is journaled at its rear end in the bracket or hanger 36 and is provided with a worm 440 (Fig. 2) meshing with a worm gear 45 on a transverse shaft 46 (see Fi s. 7 and 8) journaled in the casing 37. Sai shaft l6 has keyed thereto within said casin a pinion 47 and a worm 48, the latter having a hub 490' journaled in a. suitable bearing in the casing 37. The worm 4:3 meshes with a worm gear 49 loosely mounted on a driving shaft 50, said worm ar being ada ted to be clutched, to said s aft b means hereinafter described, whereby sai shaft may be rotated at a relatively high speed from the shaft 46. The shaft 50.

is iournaled adjacent one end in a bearing 51 formed onone end of the casing 37, and at its opposite end is rotatably mounted in a sleeve 52, the latter having a head 53 which is rotatably mounted'in a sleeve-like extension 54 formed on the end of the casing 37 opposite the bearing 51.

mes-nae Fast upon one end of the shaft 50 is a bevel gear 55 which meshes with a bevel gear 55 (Fi 2) on a transverse shaft 57 journaled in the truck body 20. Secured to one end of the shaft 57 is a sprocket 58 (see also Fig. 1) connected by a chain 59 with a sprocket 60 on the forward axle 23, whereby,\by properly controlling the rotation of the shaft 50, the truck may be propelled along the track 22 in either direction. Fast upon the opposite end of the shaft 57 is a sprocket 61, connected by a chain 62 with a sprocket 63 on the shaft of the cable reel 39, whereby said reel may be rotated as above explained to wind up or pay out the cable.

The pinion 47 meshes at opposite sides with gears 64 and 65 (Fig. 7) loosely mounted on stud shafts 66 and 67 suitably supported in the casing 37, said gears having extended sleevelike hubs formed with worms 68 and 69 (see Figs. 11 and 11*) which mesh, respectively, with worm gears 7 0 and 71 loosely mounted on the shaft 50 but adapted to be clutched thereto, as hereinafter more fully described.

The worms 68 and 69 are of opposite pitch,

whereby the worm gears 70 and 71 are rotated in opposite directions, and are preferably of less steep pitch than the worm 48, while the gears 64 and 65 are larger than this pinion 47, so thatsaid gears 70 and 71 are rotated at a relatively slow s eed with respect to thes eed of rotation of tlib gear 49. The gear 49, w en clutched to the shaft 50, is employed for propelling the truck from place to place about the mine at a relatively high speed (the motor 19 being reversed by suitable operation of the controller 38when it is desired to change the direction of travel of the truck), while the gears 70 and 71, when clutched to said shaft, are employed for moving the truck at a relatively slow speed in one direction or the other .during the'cutting operation. The sleeve 52 has formed at its forward end a pinion 7 3 which meshes with a gear 74 (see Fig. 2) formed on the journal 41 (Fig. 9) of the motor casing, 25, whereby thesleeve 52, when clutched to the shaft 50, may be employed, through the. pinion 73 and gear 74, for the purpose of rotating and angularly adjusting said motor casing in its bearings.

For selectively connecting the gears 49, 70, and 71, and the head 53' of the sleeve 52 to the shaft 50, the following mechanism is provided. Keyed to the shaft 50 between the gears 49 and 70 (Fig. 7), is a hub 75, while keyed to said shaft between the gear 71 and the head 53 is a second similar hub 76. Inter-- posed between the hub 75 and the gears 49 and O are multi le disk clutches 77 and 78, respectively, w ile interposed between the hub 76 and the gear 71 and .head 53 are similar clutches 79 and 80. The clutches 77 and 7 8 may be alternatively set to connect the gear 49 or the gear 70 with the hub 75 by means of may be operated, through a clutch controlling ring 81 operated by a clutch shifter 82, controlled by a suitable lever or handle 83 (Fig. 2) at the exterior of the casing 37. Similarly, the clutches 79 and a clutch controlling ring 84, by a clutch shifter 85 connected with a lever or handle 86 similar to the lever 83. By operating the lever 83 to move the clutch controlling ring 81in one direction or the other from a neutral position in which the clutches 77 and 78 are both released, the shaft 50 may be driven by either the gear 49 or the gear 70. By simi arly operating the lever 86 to move the clutch controlling ring 84, said shaft 50 may be driven through the gear 71, or the sleeve 52. may be clutched to said shaft for rotation therewith when said shaft is driven by either the gear 49 or the gear 7 0.-

The head 53 is formed with a series of peripheral openings or recesses 87 (Fig. 7) adapted to receive a locking pin 88 (Fig. 2) which may be inserted throug a suitably disposed opening in the casing extension 54 to lock the head 53, and consequently the sleeve 52, against rotationwhen not employed for the purpose of turning the motor casing 25. When said head and sleeve are thus locked against rotation, operation of the lever 86 to set the clutch 80 and thereby connect the shaft 50 with said sleeve, willserve to hold said shaft, and cons uently the truck, stationary, thereby affor ing braking means for said truck.

As will be readily understood, angular adjustment of the motor casing 25, by which the cutter bar 26 is carried, will serveto position said cutter bar to cut kerfs in different planes. For adjustably supporting said cutter bar upon said casing in such a manner as to provide for further adjustment of said cutter bar and to permit the same to assume a wide variet of positions, the following means are provi ed.

Referring to Figs. 1, 2, 3, 5, and 6, the forward end of the motor casing 25 has secured thereto, as by bolts 90,a cylindrical head or casin 91 formed with a pair of parallel, opposite yflanged ways 89 constituting a guide of which the longitudinal axis extends substantially diametrically thereacross. Mounted for rectilinear movement on the ways 92 having a hub 93.

89 is a slide or carriage ori which is rotatably mounted a turret 94, the axis of said hub, and consequently the axis of rotation of the turret 94, being parallel to the axis of the motor shaft 44. The turret 94 is in turn provided with a hub 95 having its axis transverse to the axis of the hub 93 but in the same plane therewith, on which hub 95 is rotatably mounted a second turret 96 carrying the cutter bar 26.

For actuating the cutter chain 27, and for controlling the movements of the turrets 94 and 96 about their axes, and the movement of r and slide 92 on the ways 89, the following mechanism is provided, reference being bad particularly to Figs. 3 to 6.

Journaled in the hub 93 is a shaft 102 to which is keyed, within the casing 91, a gear 101 operatively connected by an intermediate gear 98 with a pinion 97 fast upon the forward end of the motor shaft 44. The intermediate gear 98 is rotatably mounted on a stud 99 projecting from an annulus 100 slidably or rotatabl mounted in an annular guideway forme in the front head of the motor casing 25 and concentric with the axis of the shaft 44, said annulus being retained in said guideway by an inner disk 103 and an outer annular gib 104 suitably secured to said head. The stud 99 is connected with the shaft 102 by a link 105 loosely engaging at its ends said stud and shaft, respectively, whereb ,as the slide 92 is moved on the ways 89, sai linkwill hold the gears 98 and 101 in spaced relation and therefore in interengagement, while movement of the annulus 100 in its guideway will retain the stud 99 at a fixed distance from the axis of the shaft 7 44, and thereby hold the gear 98 in operative en agement with the pinion 97, so that the driving connection between the pinion 97 and gear 101 is maintained irrespective of the position of adjustment of the slide 92. Carried by the forward end of the shaft 102 is a bevel pinion 106 (Fig. 3) meshing with a bevel gear 107 having a hub 108 journaled in the hub 95 coaxially therewith. Also rotat-' ably mounted in the hub 95 and connected with the hub 108 for rotation therewith, is the hub 109 of a sprocket wheel 110 for driving the cutter chain 27. The hubs 108 and 109 are keyed to a sleeve 111 within which is rotatably mounted a shaft 112 arran ed coaxially with the hub 95 and having ast upon its end a pinion 113' meshin w1th an idler gear 114 journaled as by bolts 116, to e turret 96, said gear 114 meshing with a gear 117 fast upon a shaft 118 disposed substantially parallel to the shaft 112 and journaled in a suitable bearing in the turret 96. Fast upon the shaft 118 is a pinion 119 cooperating with a segmental rack 120 carried by the turret 94.

As will now be'seen, rotation of the motor shaft 44 will be transmitted through the pinion 97, gears 98 and 101, shaft 102, and gears 106 and 107, to the sleeve 111 and also to the cutter chain sprocket 110 to actuate the cutter chain. It will also be seen that, by suitably connecting thesleeve 111 with the shaft 112, so as to cause rotation of said shaft, motion will be transmitted through the pinion 113, gears 114 and 117, and shaft 118 to the pinion 119, causing the latter, by cooperation with the rack 120, to swing the turret 96 and cutter bar 26 about the axis of the hub 95.

- For so connecting the sleeve 111 and shaft 112 as to cause rotation of said shaft in either direction and at different speeds, a friction,-

upon a disk secured, t

ally controlled reduction and reversing gearing is emplo ed. The sleeve 111 is formed at one end wit an eccentric portion 121 upon which is rotatably mounted, as by a roller or other antifriction bearing 122, an annulus 123 having formed thereon two spur gears 124 and 125. The gear 125 cooperates with a larger internal gear 126 having a hub keyed or otherwise secured to the shaft 112; while the gear 124 cooperates with asecondinternal gear 127 formed on a sleeve 128 journaled in suitably formed hearings in the turret 94 and in a bracket 129 carried thereby. The ratio of the number of teeth on the gear 125 to the number of teeth on the gear 126 is difierent from the ratio of the number of teeth on the gear 124 to the number of teeth on the gear 127, so that the whole constitutes a compound epioyclic internal gear train of familiar form. Rotation of the eccentric 121 causes the gears 124 and 125 to travel about the interior of the gears 127 and 126, respectively, whereby, if the gear 127 be held stationary, the unequal ratios of the numbers of teeth on the gears of the several couples will cause the gear 126, and consequently the shaft 112, to be rotated at a greatl reduced speed with respect to the speed 01 rotation of the sleeve 111, and (if the parts be properly proportioned) in the opposite direction; and whereby, it the gears 126 and 127 be clutched together for rotation in unison, the unequal teeth ratios referred to will cause the gears to jam, so that the entire train, including the gears 124, 125, 126, and 127, together with the shaft 112, will be caused to rotate in unison with the sleeve 111.

Means are accordingly provided whereby the gear 127 may be held stationary or may be clutched to the gear 126, said means being of such a nature as to permit slipping of the 1 parts under stresses in excess of a predetermined maximum in order to prevent injury to the machine under conditions or overload, and, as herein shown, comprising a reversible friction device constructed and arranged as follows. The turret 94 is provided with an opening disposed in alinement with the shaft 112 and closed by a cap 130 bolted or otherwise secured to said turret, and with an inwardly extending annular flange 131 surrounding said opening, while the gear 126 is formed with a similar annular flange 132 disposed substantially in alinement with the flange 131. The sleeve 128 is adapted to be clutched to either the flange 131 or the flange 132 by means of friction disk clutches 133 and 134, respectively, which may he rendered selectively operative by means of a clutch controller comprising a ring 135 interposed between said clutches and connected by trunnions 136 with an annulus 137 rotatably mounted in annular groove in a sleeve 138, said sleeve 138 being, tor convenience in assembly, in two narts 111 threaded en a. A a gagement with one another. as the Lveaeee shown in Fig. 3, downward movement of the sleeve 138 and clutch controller 135 will render operative the clutch 134 to connect the gears 126 and 127, while upward movement of said sleeve and controller will disenga e the clutch 134 and render operative the clutch 133 to connect the sleeve 128 with the flange 131, thereby holding the gear 127 stationary. For operating the clutch controlling sleeve 138, there is provided a second sleeve or operating member 139 slidably mounted for ion gitudinal movement on an annular flange 140 projecting inwardly from the cap 130, said sleeve being held against rotation with respect to said cap by'means of a pin 141 carried by said flange and engagin an internal longitudinal groove in said s eeve. For moving the sleeve 139 longitudinally, there is provided a screw 142 journaled 1n the cap 130 and in threaded engagement with said sleeve or member 139, said screw being provided at its outer end beyond the cap 130 with a'hand wheel 143. The outer end the the sleeve 138 is formed with an interior shoulder 144 which, when the parts are in neutral or normal position with both clutches 133 and 134 disengaged, registers with a nut 145 on the exteriorly tireaded outer end of the sleeve or member 139. The sleeves 138 and 139 are provided, resnectively, with internal and external shoulders 146 and 147, which, when the parts are in the normal or neutral position referred to, also register with one another. Engaging the shoulder 144 and nut 145, is a washer 148, while engaging the shoulders 146 and 147 is a similar washer 149, and between these washers 148 and 149 15 interposed a spring 150 located in a recess between the sleeves 138 and 139;

As will now be seenby referring to the parts as shown in Fig. 3, downward movement of the sleeve 139, by operation of the hand wheel 143 and screw 142, will be trans mitted, through the nut 145, washer 148,- spring 159, washer 149, and shoulder 146, to the sleeve 138, causing downward movement of said sleeve and of the clutch controlling ring 136 and thereby r ndering operative the clutch 134 to connect the gears 126 and 127. Similarly, upward movement or the sleeve 139 will be transmitted through the shoulder 147, washer 149, star ng 150, washer 148, and shoulder 144, to .eeve 138, causing upward movement 0:. id sleeve and engagement oil the clutch to connect the sleeve 128 to the flange 131 so as to hold said gear 127 stationary, will be seen movement of the sleeve 139 in either direction is transmitted to the sleeve 138 through the spring 150, so that the power transmitted through the clutches 133 134 is limited by the resistance of said sh ine" yielding under co, t determine oy suitable corner- As will now be seen, by aproper adjustment of the hand wheel 143, rotation of the sleeve 111 may be transmitted through the shaft 112 and intermediate connections to the pinion 119, which, by engagement with the rack 120, will cause the turret 96 and cutter bar 26 to be swung about the axis of the shaft 112 and hub 95, saidswinging of the turret and cutter bar comprising a relatively slow movement in one direction, or a relatively rapid movement in the opposite direction. As above explained, the cutter chain 27 is continuously actuated by the sprocket 110, and the setting of the bits in said chain is such with respect to the operation of the cutter bar that the relatively slow swinging movement of said bar constitutes the operative or cutting movement thereof, while the relatively rapid swinging movement of said bar in the opposite direction constitutes the idle or positioning movement of said bar.

Provision is made whereby the turrets 94 and 96 may be locked against angular movement about their several axes of rotation, whereby the slide 92 may also be locked against rectilinear movement on the ways 89, and whereby the mechanism above described for swinging the turret 96 and cutter bar 26 may also be employed for turning the turret 94 about its axis or for moving the slide 92 on its ways for the purpose of positioning said turret and slide in accordance with the requirements. To this end, the turret 96 is formed with a hooked flange or lip 151 (see Figs. 1, 2, and 3) which extends over a segmental portion 152 ofthe turret 94 adjacent the segmental rack 120. Said seg-v mental portion 152 is formed with a series of openings 153 to receive a locking pin. 154 passed through an opening in the lip 151, whereby the turret angular movement to the turret 94 in any desired angular position. The pin 154 is preferably formed with a head 155 having a projection 156 adapted in any position of the turret 96 to engage a segmental lip or flange 15.7 on the turret 94, wherebysaid pin may be retained in locking position against accidental dislodgment, said projection being,

however, disengageable from the lip 157, to permit the pin to be removed, by giving said pin a quarter turn. Similarly, the turret 94 1S formed adjacent the'slide 92 with an annular flange 158 provided with one or more apertures 159 to receive one or more pins or bolts 160 which may also selectively engage threaded openings 200 v (Fig. 6) of a circular series formed in said slide, whereby said turret can be locked against angular movement to said slide in any desired adjusted angular position. Also for locking the slide 92 against movement on its ways, the flanges of said ways are formed with notches 161 (see Fig. 6) to receive locking pins 162 (see also Fig.

96 may be locked against 5) which may be inserted in suitably disposed openings 163 in said slide.

In order to turn the turret 94 about the axis of the hub 93, the pins 154 and 162 are placed in locking position, the bolt or bolts 160 removed, and the hand wheel 143 operated to throw in the clutch 133, thereby rendering operative the transmission connections between the sleeve 111 and the pinion 119. Inasmuch as the pin 154 looks the turret 96 against movement by the cooperative action of the pinion 119 and rack 120, the sleeve 111 will react through the gear 107 upon the gear 106, causing the former gear to travel about the axis of the latter and consequently rotate the turret 94 upon its axis. It will be seen that any desired speed of rotation may be obtained by suitable adjustment of the friction device to permit more or less slipping of the parts. When the desired angular position of said turret is reached, the bolts 160 may he slipped into locking position through the openings 159 and into engagement with the proper openings 200 to lock said turret in said position.

For the purpose of adjusting the position of the slide 92 upon its ways, the locking pin 154 and bolts 160 are placed in operative position and the pins 162 removed. The transmission gearing from the pinion 97 to the pinion 119 being, thus locked against operation, rotation of said inion 97 will cause the gear 98 to travel bo ily therearound, so that said gear, together with the link 105, will operate as a toggle mechanism to move the slide 92 on its ways into any desired position, in which it may be locked by reinsertion of the locking pins 162. In order to facilitate this adjustment of the slide 92 upon its ways, the turret 94 may, and preferably will, be previously turned upon its axis to bring said ways into a substantially horizontal position.

From the foregoing, it will be seen that the motor casing 25, carrying with it the entire mechanism or cutter head shown in Fig. 3, may be turned to any desired angular position about the horizontal axis of said motor casing, that in any an ular position of said motor casing the sli e 92 may moved transversel thereof on the ways 89, carrying with it t e turrets 94 and 96., that in any position of said slide the turret 94 may be turned to any angular position about the axis of the hub 93, and that in any angular position of the main cutter head or the turret 94, or in any position of the slide 92 on the ways 89, the turret 96, ca g with it the cutter bar 26, can be swung a at the axis of the hub 95. These permissible adjustments render the cutter bar 26 capable of assuming a wide variety of positions in order to swing and to cut a kerf in substantially any desired plane within the range of operation of the machine. Some of these positions are diagrammatically illustrated apart, of the path of movement of the slide 92 as the. cutter head is rotated about the axis A, and wherein the letters C and a with various exponents indicate positions of the axis of rotation of the turret 94 in various positions of adjustment of the main cutter head and of the slide 92. @bviouely, the ways 89 may be made of any length to provide for any desired range of movement of the slide 92. For convenience of illustration in Fig. 15, however, C and G may he taken to represent the extreme outer and inner positions, respectively, of the axis of rotation of the turret 94 when the motor casing 25 is turned into the position to bring the shaft 102 vertically above the shaft 44, as shown in Figs. 1, 3, 4, and 6, while 0 and c vmay similarly be taken to indicate the extreme inner and outer positions of said axis when the main head has been turned through an angle of 180 to bring the shaft 192 yertically beneath the shaft 44.. Similarly, the letters C, 0 c and c he taken to represent opposite extreme positions of the axis of the turret 94 with the motor casing 25 turned to brin the shaft 192 in horizontal alineinent wit the shait i lat either'side thereof, consequently hringing the path of movement'of the slide 92 into the position B It will he seen that with the axis of the turret 94 in the position C said turret 94 may he rotated to bring the cutter bar 26 into the extreme upper horizontal position H, that with said axis in the position 0 said turret can he turned to hi ing the cutter bar into the extreme lower horizontal position k, that with said axis in either p of the positions C or o said turret may be turned to bring said cutter bar into the inter mediate position H, and that by proper adjustment of the main cutter head and oi the slide 92 said cutter bar may be caused to occupy any horizontal position between the positions H and it. Similarly, it will be seen that with the path oi" movement of the slide 92 in the position 3*, the cutter bar can occupy the extreme vertical positions V and 0 the central vertical position V or any vertical position between the positions l and '0 It will, moreover, be seen that with the path of movement of the slide 92 in the position B the turret 9% can be turned to bring the cutter bar into; various ofiset vertical positions, those corresponding to the axis positions C and 0 being indicated by the characters. V and a; While with the path of movement of said slide in the position B said cutter har may he caused to occupy various ofi'set horizontal positions H and If. In the latter connection it will be obvious that, by suitable adjustment of the slide 92, said cutter bar can he brought into insects any desired vertical position intermediate the positions V or intermediate the positions 12 or into any horizontal position intermediate the positions H or intermediate the positions if. it will, of course, be understood that with the cutter bar in any of the positions indicated, said cutter bar may swing about the axis of the hub 95 in a plane perpendicular to said axis to cut a kerf in the mine face in that plane. It will also be understood that, whlle certain horizontal and vertical ositions oi the cutter bar are indicated in 4 ig. 15, the turret 94 may be turned upon its axis to bring said cutter bar into any desired inclined position tangent to a circle drawn about the axis of said turret as a center, such circles drawn with respect to the several'axis positions shown being indicated in Fig. 15 by the letters D, D, d 03 D D d, and (2 and one such inclined position'with respect to the circle D being shown at It will further be seen that, while certain angular positions of the motor casing 25 have been referred to (namely, those in which the path of movement of the slide 92 occupies the vertical and horizontal positions B and B said motor casing and main cutter head can be turned to an intermediate angular position to dispose the path of movement of the slide 92 at an inclination, one such position being indicated by the line B it will be clear that in any such position the slide 92 can be adjusted to vary the distance of the axis oirotation of the turret 9% from the main axis Altwo such positions being indicated by C and 0 respectively), and that with said axis in any such position said turret can be rotated to bring the cutter bar into any position gent to the corresponding circle D or (Z the two extreme horizontal positions being indisated for illustrative purposes by the letters a and 72 It will thus be seen that the cutter bar may be adjusted into substantially any position, and may he disposed at substantially any angle in any such position, so as to cute keri' in substantially any plans within the range or themachine. V

A machine arranged as above described is capable of a wide variet of uses. For example, in the operation 0 entry driving, said machine may be used in accordance with the well lrnown arcwall method illustrated in Fig. 12. in accordance with this method, the truck having been propelled into a suitable position in proximity to the face to he cut.

and brought to rest therein, the pin 154 is removed and thehand wheel 148 operated to throw in the clutch 134 and cause the cutter bar 26 to he quickly swung into the dotted line position F The clutch 13 1- is then released and the cutter bar locked in this position by the pin 154, after which the lever 86 is operated to throw in the clutch 79 to cause the machine to be fed toward the face having been inserted to lock the head 53 to.

the sleeve 54), thereby holding the machine in stationary position. The pin 154 is then removed and the hand wheel 143 operated to engage the clutch 133, thereby causing the cutter bar to be swung slowly from the osition shown in full lines into the dotted line position G. Finally, the pin 154 is again inserted to lock the cutter bar (the clutch .133 having been released), and the lever 83 operated to engage the clutch 78, thereby causing the machine to be moved slowly rearwardly and bringing the cutter bar into the dotted line positlon K to complete the cut. Thereafter, by suitable operation of the hand wheel 143; the cutter bar may be swung into a substantially central position, the lever 83 operated to engage the clutch 7'7, and the controller 38 operated to reverse the motor,

whereupon'the machine will be caused to back out of the entry, whence it may be propelled to a different part of the mine.

It will be seen that in operating as above described, the machine can be caused to insert, for example, either horizontal kerfs, as'illustr'ated in Fig. 13, or vertical kerfs as illustrated in Fig. 14, and that these kerfs may be cut in substantially any plane within the range of the machine. Thus, for example, in

- cutting horizontal kerfs said machine may be used for undercutting, as illustrated in Fig. 16, for topcutting, as illustrated in Fig. 13, or for inserting a substantially horizontal kerf in any intermediate plane. It will also be seen that by a suitable adjustment of the hand wheel 35, the plane of the cutter bar may be adjusted about a transverse horizontal axis in order to cause the kerf to be cut at a slight angle to the horizontal in the direction i); travel of the machine, as indicated in n general, it will be seen that a machine has been provided wherein the cutter bar is capable of being adjusted in various positions about both transverse and longitudinal horizontal axes, and that said cutter bar is further adjustable toward and from said last named axis, and angularly about a third axis parallel to said longitudinal axis, into an desired position within the'range of operation of the machine.

In addition to operatin in accordance with the arcwall method, as a ve described, the machine is also capable of use as a mounted longwall machine, as diagrammatically illustrated in Figs. 17 and 18. Whenso operated, the controlling lever 83 may be adjusted to engage the clutch 77, causing the machine to be pro lled at relatively high speed to the endof e face to be cut. Thereafter, the lever 83 may be operated to disengage the clutch 77 and the lever 86 operated to engage the clutch 80 to lock the truck in position on the track. The hand wheel 143 may then be operated to en age the clutch 133, thereby causing. the cutter ar 26 to be swung into either of thepositions shown in Fig. 17 (depending upon the position of the face to be 'cut with respect to the track) to produce the sumping cut. The hand wheel 143 is then operated to release the clutch 133, the lockingpin 154 inserted to lock the cutter bar in position, and the lever 83 operated to en age the clutch 78, thereb causing the trucli to move slowly rearwar ly along the trackway and' the cutter bar to cut the desired kerf in the face.

Should it be desired to cut such a kerf in a plane inclined to the plane of the trackway, as in following a pitching seam, the cutter bar 26 may be brought to the desired angle and vertical position by an angular adjust ment of either the main head or the turret 94 and a suitable adjustment of the slide 92, as indicated in Fi 18.

While severafuses of the machine have thus been indicated, these uses b no means exhaust its possibilities, since, by reasonmiits wide adjustability, convenient and flexible control, high power, and sturdy construc tion, man other ways in which the same may be utilized to great advantage will be readily recognized b those skilled in the art.

For the sa e of conciseness I shall employ the term turret in the appended claims, since this word both aptly and concisely defines certain structural elements of my improved mechanism.

In the appended claims the terms longitudinal and transverse are used, with reference to axes, in the sense of extending longitudinally of the'machine as a' whole, or transversely of the machine as a whole, unless otherwise plainly indicated in the claims themselves.

While I have in this application specifically described one form which my invention may assume in practice, it will be understood that this form of the same is shown for purposes of illustration and that theinvention may be modified and embodied in various other forms without departing from its spirit or the scope of the appended claims.

What I claim as new and desire to secure by Letters Patent is:

1. In a mining machine, in combination, a motor, a support rectiline'arly movable towards and from a working face during cutting operation of the machine, a motor casing in which said motor is disposed rotatably mounted on said support for rotation about an axis parallel'to the direction of rectilinear movement of said support during cutting, and plane kerf cutting means driven by said motor carried by said motor casing and adjustable with respect to said casing towards and from the axis of the latter.

2. In a mining machine, in combination, a motor, a support rectilinearly movable towards and from a Working face during cutting operation of the machine, a motor casing in which said motor is disposed rotatably mounted on said support for rotation about an axis parallel to the direction of rectilinear movement of said support during cutting, plane kerf cutting means driven by said motor carried by said motor casing, and means for adjusting said keri cutting means angularly in a plane parallel to said axis of said casing and also bodily towards and from the latter.

3, In a mining machine, in combination, a motor, a support, a motor casing in which said motor is disposed, said motor casing bemounted on said support for rotation about an axis coinciding with the axis of the motor, and cutting means driven by said motor carried by the motor casing and movable to a position in which its plane contains the axis of the motor.

4. In a mining machine,in combination, a motor, a support, a motor casing in which said motor is disposed, said motor casing being mounted on the support for rotation about an axis coinciding with the axis of the motor, and cutting means carried by the motor casing and adjustable about an axis parallel to, but off set from, the axis of the casing.

5. In amining machine, in combination, a support, a motor casing rotatably mounted thereon for adjustment about a horizontal axis, and cutting means carried by said motor casing and adjustable by rotationot' said casing to cut in horizontal or in vertical planes, said cutting means being adjustable with respect to said casing and operative in any given position of said casing to cut a series.

of heris disposed in intersecting planes each of which is parallel to said horizontal axis.

6. in a mining machine, in combination, a support, a motor casing rotatably mounted thereon about a longitudinally disposed horizontal axis, and cutting means carried by said motor casing, said cutting means being adjustable with respect to said casing and operative in any given position of said casing to cut a series of keris disposed in intersecting planes successive movements of said support toward a working face.

3.. In a mining machine,,a support, a mounting rotatable thereon about a longitudinal horizontal axis, ways disposed onsaid moun ing, a carriage movable along the ways, or tting means including circulating cutting el ments moving in a plane orbit, said cutting means being adjustably mounted on said can riage for adjustment into a plurality of positions in each of which a homologous axis of said orbit maycoincide with a distinct elemesses ment of a surface of revolution whose axis is parallel to said horizontal axis.

8. In a mining machine, a support, a mounting rtatable thereon about a longitudinal axis, ways disposed thereon, a carriage movable along the ways, cutting means moving in an orbit and mounted on said carriage for adjustment into a plurality of positions in each of which a homologous axis of said orbit may coincide with a distinct element of a surface of revolution whose axis is parallel to said longitudinal axis, and said cutting means being also adjustable with respect to said carriage whereby said cutting means may be swung to cause said homologous axis to make angles with said elements in planes tangent to said surface at said elements.

9. In a mining machine, a support, ways mounted on said support for rotation about an axis perpendicular to the plane of said ways, a carriage movable along said ways, cutting means movable in an orbit and adjustably mounted on said carriage for movement into a plurality of positions in which the major axis of said orbit will coincide with elements of a cylindrical surface .whose axis is parallel to a line which is parallel to said first mentioned axis, and means for varying the distance between the axis of said cylinder and the first mentioned axis.

10. in a mining machine, a support, means for feeding the same during cutting, ways mounted on said support for rotation about an axis perpendicular to the plane of said ways and parallel to the direction of move ment of said support, a carriage movable along said ways, a motor, means driven by said motor for moving said carriagein said ways, and cutting means carried by said carriage and movable in a plane orbit, said cutting means being mounted on said carriage for swinging movement in a series of planes tangent to a cylinder whose axis is perpendicular to the plane of said ways.

11. in a mining machine, a support, means for feeding the same during cutting, ways mounted on said support for rotation about an axis (perpendicular to the plane of said ways an parallel to the direction of movement of said support, a carriage movable along said ways, a motor, means driven by said motor for moving said carria e insaid ways, cutting means carried by sai carriage and movable in a plane orbit, said cutting means being mounted on said carriage for swinging movement in a series of planes tangent to a cylinder whose axis is perpendicular to the plane of said ways, and means for tilting said support about a horizontal axis perpendicular to a vertical plane including said first mentioned axis.

12. In a mining machine, a sup ort, a turntable thereon having a horizonta axis of rotation, ways on said turntable, a carriage m0v able along said ways, a swinging cutter bar of ways mounted on said support or rotation relative thereto about a horizontal axis perpendicular to the plane of said ,ways, a carriage movable along said ways, 'a swinging cutter bar mounted on said carria e for swinging movement in planes erpen icular to the plane of movement of sai carriage, and means including a rotatably mounted prime mover and o erative connections therewith, whereby sai carriage may be adjusted on said ways and said bar may be adjusted on said carriage so that said bar may swing in a plane including the axis about which said ways are rotated and in one position have its axis ali ned rtherewith.

14. In a mining machine, a support, ways carried by said support for, rotation about an axis perpendicular to the plane of said ways, a carriage movable-along said ways, a swinging cutter bar mounted on saidcarriage and swinging in a plane erpendicular to the plane of said ways, and means for adjusting said bar as a whole ,on said carriage, said carriage on said ways, and said ways on said support whereby a plurality of kerfs may be cut intersecting in a line constitutin a continuation of the axis about which said ways are rotatable.

15. In a mining machine, in combination, a support, a motor, a motor casing in which said motor is dis osed rotatably mounted on said support, ans cutting means carried by said motor casing, said motor casing being rotatable on an axis extending longitudinally of the machine and said cutting means being adapted to cut in planes substantially parallel to the axis of rotation of said motor casing and being adjustable by said motor bodily toward and from said axis.

16. In a mining machine, in combination,

a support, a motor casing rotatably mounted thereon upon a horizontal axis, a motor in said casing having a rotating element whose axis of rotation is parallel to a line parallel to said horizontal axis, a cutter bar, means for supporting said cutter bar from said motor casing, said supporting means permitting said cutter bar to swing about an axis trans verse to the axis of rotation of said motor casing, and means for moving said support in a direction parallel to said first mentioned axis to effect the cutting of a plane kerf.

17. In a mining machine, in combination, a support, a motor, a motor casing rotatably mounted thereon for rotation about an axis coincident with the axis of rotation of said motor, power means for rotating said motor and cuttin casing about its axis, and cutting means carried b saidmotor casing.

18. n a mining machine, in combination, a support, a motor, a motor casing in which said 'motor is disposed rotatably mounted upon said support for rotation about an axis concentric with the motor axis, means actuated'by said motorfor rotating said casing, and cutting means carried by said casing and actuated by said motor.

19. In a mining machine, in combination a support, a motor casing rotatably mounted thereon, cutting means carried by said motorcasing, a gear carried directly by said motor casing, a pinion cooperating with said gear to rotate said casing, a motor in said casing for actuating said cutting means, and means actuated by said motor for rotating said pinion.

20. In a mining machine, in combination, a support, a motor, a motor casing in which said motor is disposed, said motor casing being rotatably mounted on said support for rotation about the axis of said motor, and cutting means carried by said motor casing and angularly adjustable thereon into lanes per en icular to angularly disposed ra ii exten in from the axis of the motor. 7

21. n a mining machine, incombination, a support, a motor having a rotatable power shaft, a motor casing enclosing said motor and mounted onsaid support for rotation on an axis coincident with the axis of said shaft, a turret rotatably mounted on said casing, and a cutter carried by said turret.

22. In a mining machine, in combination, a support, a motor having a rotatable power shaft, a motor casing enclosing said motor and mounted on said support for rotation on an axis coincident with the axis of said shaft,

a turret rotatably mounted on said casing,

and a cutter bar mounted on said turret to swing about an axis transverse to the axis of said turret.

23. In a mining machine, in combination, a support, a motor having a rotatable power shaft, a motor casing enclosing said motor and mounted on said support for rotation on an axis coincident with the axis of said shaft, means carried by said motor casing an about an axis parallel to the axis of rotation of said casing.

24. In a mining machine, in combination a support,"a motor casing rotatably mounted thereon for rotation on an axis which passes throughthe casing, a turret mounted on said casing for rotation about an axis parallel to the axis of rotation of said casing, and a cutter bar mounted on said turret to swin about an axis transverse to said first name axes.

25. In a mining machine, in combination, a support, a motor havin a power shaft, a motor casing in which sai motor is disposed angularly adjustable thereon rotatably mounted on said support for adjustment about the axis of rotation of the motor shaft, and a cutter mounted on said casing for rectilinear adjustment in a direction transverse to the axis of rotation of said casing.

26. In a mining machine, in combination, a support, a second support rotatably mounted thereon for rotation about a horizontal axis, a carriage slidably mounted on said second support for movementtransverse to the axis of rotation thereof, and plane kerf cutting means carried by and bodily adjustable relative to said carriage about an axis parallel to said horizontal axis and outside the cutting means and operative to cut kerfs parallel to said horizontal axis.

27. In a mining machine, in combination, a support, a motor having a power shaft, a motor casing mounted on said support for adjustment about an axis coincident with that of said power shaft, a carriage slidably mounted on said motor casing for movement transverse to the axis of rotation thereof, and cutting means carried by and adjustable relative to said carriage. V

28. in a mining machine, in combination, a horizontall movable support, a second support rotatab y mounted thereon, for rotation about an axis parallel to the path of said first mentioned support, a carriage slidably mounted on said second support for movement transverse to the axis of rotation thereof, power means for sliding said carriage on said second support, a cutter bar mounted on said carriage to swing about a ivot disposed on said carriage and arrange transverse to the axis of rotation of said second support, and means to adjust said bar pivot on said carriage.

29. In a mining machine, in combination, a support, a second support rotatably mounted thereon, a carriage slidably mounted on said second support for movement transverse to the axis of rotation thereof, a cutter bar mounted on said carriage to swing about an axis disposed on said carriage and arranged transverse to the axis of rotation of said second support, and a single means selectively operative to rotate the said second support and to move said carriage.

30. In a mining machine, in combination, a support, a second support rotatably mounted thereon, a carriage slidably mounted on said second support for movement transverse to the axis of rotation thereof, a cutter bar mounted on said carriage to swing about an axis disposed on said carriage and arrange transverse to the axis of rotation of said second support, and a single means selectively operative to rotate said second support and to swing said cutter bar.

31. In a mining machine, in combination, a support, a second support rotatably mounted thereon for rotation on a horizontal axis, a

mac

carriage slidably mounted on said second support for movement transverse to the axis of rotation thereof, a cutter bar mounted on said carriage to swing about an axis disposed on said carriage and arranged transverse to the axis of rotation of said second support, and a. single means selectively operative to move said carriage and to swing said cutter bar.

32. in a mining machine, in combination, a support, a motor, a casing for said motor mounted on said support for adjustment on an axis coincident with the axis of the motor shaft, a carriage slidably mounted on said casing for movement transverse to the axis of rotation thereof, cutting means carried by said carriage, and continuously operative driving connections between said motor and cutting means.

33. ln a mining machine, the combination with a plane kerf cutter, of supporting means therefor adapted to permit independent angular motor power adjustment thereof about a plurality of parallel axes, said cutter being mounted on said supporting means for rectilinear bodily adjustment in a direction transverse to said axes,

34. ln a mining machine, the combination with a cutter, of supporting means therefor adapted to permit angular adjustment thereof about a pluralitv of parallel axes parallel to the plane of said cutting mechanism, said cutter being mounted on said supporting means for rectilinear adjustment in a direction transverse to said axes and said supportmg means being movable in a direction parallel to said axes to efiect cutting by said cutter.

35. in a mining machine, the combination with a cutter bar, of supporting means therefor adapted to permit angular adjustment thereof about a plurality of parallel axes,

said cutter bar being mounted on said sup-- porting means to swing about an axis transverse to said first named axes, and being capable of rectilinear adjustment in a direction transverse to said first named axes, said supporting means being movable in a directidn parallel to said axes to efi'ect cutting by said cutter.

36. In a mining machine, in combination, a support, a motor casing rotatably mounted thereon, a carriage slidably mounted on said motor casing for movement transverse to the axis of rotation thereof, a turret rotatablv mounted on said carriage, and a cutter carried by said turret and adjustable to a plurality of angular positions relative thereto.

37, in a mining machine, in combination, a support, a motor casing rotatably mounted thereon, a motor therein constituting the prime mover for said machine, a carriage slidably mounted on said motor casing for movement transverse to the axis of rotation thereof, a turret rotatably mounted onsaid carriage, a second turret rotatably mounted on said first named turret, and a cutter bar carried by said second turret.

38. In a mining machine, in combination, a motor, a cutter'bodily adjustable with re spect to said motor, and transmission mechanism for actuating and adjusting said cutter from said motor including a driving clement connected with said motor, a driven element adjustable with respect to said driving element bodily towards and away from the latter and operatively connected with said cutter, a single bodily movable transmission element connecting said driving and driven elements and offset from the axis of the driving element, and means for maintaining said transmission element in engagement with both of said first named elements in all positions of adjustment of said driven element. 39. In a mining machine, in combination, a support, a-motor thereon, a carriage slidably mounted on said support, cutting means on said carriage, and transmission mechan sm for actuating and adjusting said cutting means from said motor including a driving element connected with said motor, a driven element movable with said carriage bodily towards and away from said driving element and connected with said cutter, a single transmission element connecting said driving and driven elements, and offset from the a ris of the driving element, and means for maintaining said transmission element in engagement with both of said first named elements in all positions of said carriage.

40. In a mining machine,in combination, a motor, a cutter adjustable with respect to said motor, and transmissionmechan sm for actuating and adjusting said cutter from said motor including a pinion on the motor shaft, a gear adjustable with respect to said pinion bodily towards and away from the latter and operatively connected with said cutter, a second gear connecting said p n on with said first named gear, means for maintaining said second gear in mesh with both said pinion and said first named gear in all positions of adjustment of said first named and means operative atiwill for preventing rotation of said first mentioned gear to cause bodily movement thereof and of said cutters 41. In a mining machine, in combination, a motor, a cutter adjustable with respect to said motor, and transmiss on mechanism for actuating and adjusting said cutter from said motor including a driving element' connected with said motor, a driven element ad ustable with respect to said driving element bodily towards and away from the latter and operatively connected with said cutter, a movable transmission element connecting said driving and driven elements, means for causing said transmission element to maintain fixed distances from the axes of said driving and driven elements when said driven element is cutting means,

to cut in diiferent positions in which kerfs .ing and moving means adjusted, and means cooperating with said first mentioned element to cause the coaction of said several elements to cause translation of saidfirst mentioned element.

42. In a mining machine, in combination, a motor, a cutter adjustable with respect to said motor, and transmission mechanism for actuating and adjustin said cutter from said motor including a driving element connected with said motor, a driven element adjustable with respect to said driving element and operatively connected with said cutter, a movable transmission element connecting said driving and driven elements, a link connecting said driven and transmission elements, and an annular slide arranged concentric with said driving element by which said transmission element is carried.

43. In a mining machine, in combination, meansfor adjusting the same parallel to planes making angles with each other will be cut, means for locking said adjusting means against operation, means for moving said cutting means with respect to the work during the cutting operation, a common actuator for said ad usting means and moving means, and transmission devices between said actuator and said adjusting and moving means operable as a brake upon said moving means when said adjusting means is locked.

44. In a mining machine, in combination, a suppoit, a motor casing rotatably mounted thereon, cutting means carried-by said motor casing, means for locking said motor casing against rotation, means for moving said support, a common actuator for said rotating means and moving means, and transmission devices between said actuator and said rotatupon said moving means when said motor casing is locked against rotation.

45. In a mining machine, in combination,

a truck, cutting means thereon, means for adjusting said cuttin meansto cut in different positions aral e1 to angularly related planes, means or locking said adjusting means against'operation, means for propelling said truck, a common actuator for said adjusting means and propelling means, and transmission devices etween said actuator and said adjusting and propellin operable as a brake for said truck w adjusting means is locked.

46. In a mining'machine in combination, cutting means, means for adjusting the same to cut in different angularly related planes, means for moving said cutting means with respect tof the work during the cutting operation, a shaft, transmission devices for actuating said moving means, means vfor operatively connecting said transmission devices to said shaft, a transmission member operatively connected with said adjusting means,

means en said operable as a brake iso " a carriage slidably mounted on said means for operatively connecting said transmission member to said shaft, and means for locking said transmission member against operation.

47. In a mining machine, in combination, a support, ways thereon rotatable about a horizontal axis, a carriage slidably mounted on said ways, power means for adjusting said carriage on said ways including a plurality of rotating elements, said rotatingelements rotating only on axes perpendicular to the plane of said ways, cutting means carried by said carriage and angularly adjustable relative thereto, and mean for locking said carriage to said ways.

48. In a mining machine, in combination, a support, a second support rotatably mounted thereon for rotation on a horizontal axis, ways on said second support, a carriage slidably mounted on said ways for movement transverse to the axis of rotation of said second support, cutting means including a plane cutter bar carried by said carriage and angularly adustab'le relative thereto, power means for moving said cutting means on said carriage, and means forlocking said carria e to said ways.

49. n a mining machine, in combination, a support, ways thereon rotatable about a horizonal axis and having notched flanges, ways, cutting means carried by said carriage, and a pin removably carried by said carriage and engaging the notches in sald flanges for locking said carriage to said ways.

50. In a mining machine, in combination, a support, vertical ways thereon, a carriage slidably mounted on said ways for sliding movements in vertical planes, a movable cutter carried by said carriage and disposed in a.

plane perpendicular to the plane of movement of said carriage, and power operated mechanism alternatively operative to move said carriage or to move said cutter thereon while said carriage remains stationary.

5 1. In a mining machine, in combination, a support, vertical ways thereon, a carriage slidably mounted on said ways for sliding movements-in vertical lanes,a movable cutter carried by said carriage and disposed in a plane. perpendicular to the plane of movement of said carriage, mechanism alternatively operative to move said carriage or to move said cutter thereon while said carriage remains stationary, and devices for locking said cutter against movement on said carriage and for' locking said carriage against movement on said ways.

52. In a mining machine, in combination' a support, ways thereon rotatable about a substantially horizontal longitudinal axis, a carriage slidably mounted on said ways, a. turret rotatably mounted on said carriage, a cutter carried by said turret, and mechanism alter- .on said ways,

natively operative to move said carriage or to rotate said turret thereon.

53. In a mining machine, in combination, a support, ways thereon, rotatable about a horizontal axis, a carriage slidably mounted a turret rotatably mounted on said carriage, a cutter carried by said turret, and common power mechanism :ilternatively operative to move said carriage or to rotate said turret thereon.

54. In a mining machine, in combination, a support, ways rotatably mounted thereon, for adjustment about a horizontal axis, a carriage slidably mounted on said ways, a turret rotatably mounted on'said carriage, a movable cutter on said turret and common power operated mechanism selectively operable to move said carriage, to rotate said turret thereon, or to move said cutter on said turret.

55. In a mining machine, a truck, a motor at the front end thereof and having an enclosing casing rotatable about a horizontal axis, cutting mechanism disposed in a plane parallel to said axis and operatively connected to the front end of said motor and carried on said casing, and easing rotating mechanism carried on said truck and operatively connected to for driving the rear end of said motor.

56. In a mi'nin machine, a truck, a motor at the front end t ereof and having a casing rotatable about the axis of the motor, cutting mechanism operatively connected to the front end of said motor and carried on said casing, and casingrotating mechanism carried on said truck and operatively connected to the rear end of said motor.

57. In a mining machine, a truck, a motor at the front end thereof and having a casing rotatable about an axis extending longitudinally of said motor, cutting mechanism 0 eratively connected to the front end of said motor and carried on said casing, and easing rotating mechanism carried on said truck and operatively connected to the rear end of said motor.

58. In a mining machine, a truck, a motor thereon having a casing rotatable about the axis of said motor, cuttin mechanism driven by said motor and carrietfon said casing, cas ing rotating mechanism on said truck operatively connectable to said motor, and truck driving mechanism on said truck operatively connectable to said motor.

59. In a mining machine, a truck, a motor thereon having a rotatable casing, cutting mechanism driven by on said casing, casing rotating mechanism on said truck operatively connectable to said motor, truck'driving mechanism on said truck operatively connectable to said motor, and coaxially disposed frictional controlling mechanisms for controllin said casing rotating and truck driving mec anisms.

said motor and carried. 

